dump/restore from 7.4.3linux to 8beta1 win32

I did the pg_dump with the Linux 7.4.3 version and tried to pg_restore
with Win32 8beta1 version and I got:

C:\TEMP>pg_restore -d desarrollo -i -U postgres xdump
pg_restore: [archiver] input file does not appear to be a valid archive

Taken from the help

"For best results, however, try to use the pg_dumpall command from
PostgreSQL 8.0.0beta1, since this version contains bug fixes and
improvements over older versions. While this advice might seem
idiosyncratic since you haven't installed the new version yet, it is
advisable to follow it if you plan to install the new version in
parallel with the old version."

Is there a way to get the pg_dump 8beta1 version for Linux without
installing the whole package? any idea or suggestion?

Thanks in advance,

--
Sinceramente,
Josué Maldonado.
"¿Por qué cuanto más retrasados estamos, más dura la luz roja del semáforo?"